48% knows the answer to this question: "2012 marked the one-year anniversary of the death of which terrorist leader? "

And do you know the answer to this one? "In India, the enormous, beautiful tomb of Shah Jahan's wife is called what? "

69% knows the answer to this question: "Who introduced processed cheese in 1915? "

And do you know the answer to this one? "What famous fairy tale writer was German?"

48% knows the answer to this question: "How did Marie Antoinette die? "

And do you know the answer to this one? "What Greek word is used to indicate the place of worship dedicated to all the gods of Olympus?"

40% knows the answer to this question: "In 2012, which country held its first election following the death of Muammar Gaddafi? "

And do you know the answer to this one? "Apartheid, meaning segregation, was a policy of what African nation until 1994?"

90% knows the answer to this question: "Chiang Kai-shek led which country? "

And do you know the answer to this one? "'King Lear' was a play written by which historical figure?"

56% knows the answer to this question: "Which of these was the "Lusitania"? "

And do you know the answer to this one? "Queen Beatrix abdicated as Queen of which country in 2013?"

34% knows the answer to this question: "What dynasty built most of the present-day Great Wall of China as a way to keep out the Mongols? "

And do you know the answer to this one? "Achilles is the mythical hero protagonist of Iliad and other Greek legends. Despite being almost invulnerable, had only one weakness. Which one?"

40% knows the answer to this question: "What does OPEC stand for? "

And do you know the answer to this one? "What are the Russian 19th and 20th century jeweller Peter Faberge's most famous creations shaped like?"

53% knows the answer to this question: "Where will you find the Crown Jewels of England? "

And do you know the answer to this one? "What was the second city to be attacked with a nuclear bomb?"

70% knows the answer to this question: "What country's unstable Fourth Republic had more than 20 governments from 1946 until Charles de Gaulle returned to politics and replaced it with the Fifth Republic? "

And do you know the answer to this one? "In 2014, the International Court of Justice ruled that what country should stop its whaling program?"

70% knows the answer to this question: "Who said 'That's one small step for man; one giant leap for mankind'? "

And do you know the answer to this one? "Which country did Iraq invade in 1990, leading to the First Gulf War? "

41% knows the answer to this question: "In what war was the 'Battle of Nashville'? "

And do you know the answer to this one? "What country did Czar Nicholas lead?"